Home / 20,325.36-28,040.76-12,361.20

Finding the Fourth Proportional to 20,325.36, 28,040.76 and 12,361.20

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Solution

The fourth proportional to 20,325.36, 28,040.76 and 12,361.20 is: 17,053.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.36 : 28,040.76 = 12,361.20 : x
  2. Step 2: Convert to fraction form
    20,325.36/28,040.76 = 12,361.20/x
  3. Step 3: Cross multiply
    20,325.36x = 28,040.76 × 12,361.20
  4. Step 4: Simplify right side
    20,325.36x = 346,617,442.51
  5. Step 5: Solve for x
    x = 346,617,442.51/20,325.36
  6. Step 6: Final answer
    x = 17,053.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.